...I found two sets of rings I liked @ the same price with the biggest difference I can see being one set is fabricated with 7075 and the other 6061...
https://www.amazon.com/gp/product/B07M7LDSG1/ref=ox_sc_act_title_2?smid=A1Y49AICJXP0NC&th=1
https://www.amazon.com/gp/product/B08BJD8HWL/ref=ox_sc_act_title_1?smid=A2UC2E5NACFGWB&psc=1
https://www.clintonaluminum.com/6061-vs-7075/
https://www.amazon.com/gp/product/B07M7LDSG1/ref=ox_sc_act_title_2?smid=A1Y49AICJXP0NC&th=1
https://www.amazon.com/gp/product/B08BJD8HWL/ref=ox_sc_act_title_1?smid=A2UC2E5NACFGWB&psc=1
https://www.clintonaluminum.com/6061-vs-7075/